<template>
  <div class="login-container">
    <div>
      <van-nav-bar
        class="page-nav-bar"
        title="登录"
        left-arrow
        @click-left="$router.back()"
      />
    </div>
    <div>
      <van-form @submit="onSubmit" ref="loginForm">
        <van-field
          v-model="user.mobile"
          name="mobile"
          left-icon="music-o"
          placeholder="请输入手机号"
          :rules="loginFormRules.mobile"
          type="number"
          maxlength="11"
          ><i slot="left-icon" class="heima hm-shouji"></i>
        </van-field>
        <van-field
          v-model="user.code"
          name="code"
          left-icon="smile-o"
          placeholder="请输入验证码"
          :rules="loginFormRules.code"
          maxlength="6"
        >
          <i slot="left-icon" class="heima hm-yanzhengma"></i>
          <template #button>
            <van-count-down
              :time="1000 * 60"
              format="ss s"
              v-if="isCountDownShow"
              @finish="isCountDownShow = false"
            />
            <van-button
              size="small"
              type="primary"
              native-type="button"
              @click="onSendSms"
              v-else
              >发送验证码</van-button
            >
          </template>
        </van-field>
        <div style="margin: 16px">
          <van-button block type="info" native-type="submit">登录</van-button>
        </div>
      </van-form>
    </div>
  </div>
</template>

<script>
import { login, sendSms } from '@/api/user'
export default {
  name: 'LoginIndex',
  components: {},
  props: {},
  data () {
    return {
      user: {
        mobile: '',
        code: ''
        // 246810
      },
      loginFormRules: {
        mobile: [
          {
            required: true,
            message: '手机号不能为空'
          },
          {
            pattern: /^1[3|5|7|8]\d{9}$/,
            message: '手机号格式错误'
          }
        ],
        code: [
          {
            required: true,
            message: '验证码不能为空'
          },
          {
            pattern: /^\d{6}$/,
            message: '验证码格式错误'
          }
        ]
      },
      isCountDownShow: false
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    async onSubmit (values) {
      console.log('submit', values)
      // 1. 获取表单数据
      const user = this.user
      // 2. 表单验证
      this.$toast.loading({
        message: '登录中...',
        forbidClick: true, // 禁用背景点击
        duration: 0 // 持续时间，默认是 2000，如果为 0 则持续展示
      })
      // 3. 提交表单请求登录
      try {
        const res = await login(user)
        console.log(res)
        this.$store.commit('setUser', res.data.data)
        this.$toast.success('登录成功')
        this.$router.back()
      } catch (error) {
        if (error.response && error.response.status === 400) {
          this.$toast.fail('手机号或验证码错误')
        } else {
          this.$toast.fail('登录失败，请稍后重试')
        }
      }
    },
    async onSendSms () {
      try {
        await this.$refs.loginForm.validate('mobile')
        console.log('验证成功')
      } catch (err) {
        return console.log('验证失败', err)
      }
      this.isCountDownShow = true
      try {
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (error) {
        this.isCountDownShow = false
        // 此处可以添加一个判断error.response是否存在，以防止语法错误
        if (error.response && error.response.status === 429) {
          this.$toast('发送太频繁，请稍后重试')
        } else {
          this.$toast('发送失败，请稍后重试')
        }
      }
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
  .heima {
    font-size: 37px;
  }
  .send-sms-btn {
    width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}

/deep/ .van-button--primary {
  border-color: #1989fa !important;
}

.van-count-down {
  color: #fff;
  background-color: #07c160;
  border: 0.02667rem solid #07c160;
  width: 152px;
  height: 46px;
  line-height: 46px;
  text-align: center;
}
</style>
